MiT: No I haven't.... I'm wondering if the battery may be starting to fail? It's still original and I know some days (cold days) it seems to struggle ever so slightly when starting the car...

My driving "pattern" is roughly 2 long (500+ mile) trips per month with a majority of that non-stop giving the battery a good long charge each month... But still, it could finally be starting to show it's age and generating some odd gremlins.